# Hydrogenaudio Knowledgebase:Sandbox

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$\sqrt{12}$

diff = 10 × log10(P2 / P1)

diff = 10 × log10(p22 / p12)

diff = 20 × log10(p2 / p1)  because log10(a2) = 2 × log10(a)


 ${diff} = 10 \cdot log_{10}\left(\frac{P_2}{P_1}\right )$

${diff} = 10 \cdot log_{10}\left(\frac{p_2^2}{p_1^2}\right )$

${diff} = 20 \cdot log_{10}\left(\frac{p_2}{p_1}\right )$ because $log_{10}(a^2) = 2 \cdot log_{10}(a)$


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a2

$\sqrt{5}$

$\sum_{n=0}^\infty \frac{a^n}{n!}$

$\lim_{x\to\infty}f(x)=0$

$x = a_0 + \frac{1}{a_1 + \frac{1}{a_2 + \frac{1}{a_3 + a_4}}}$

Does things work after update someone wonders... Hope the upgrade works!

a7 $\sqrt{7}$ test testing plugin

Multiplication table
× 1 2 3
1 1 2 3
2 2 4 6
3 3 6 9
4 4 8 12
5 5 10 15

foobar2000
{{{logo}}}
Screenshot of foobar2000 v0.9 using the default user interface
Developer: Peter Pawlowski
Stable release: {{{stable_release}}}
Preview release: {{{preview_release}}}
OS: Windows
Use: Audio player
Website: www.foobar2000.org

this ist a test

a6

$\sum_{n=15}^\infty \frac{a^n}{n!}$